Manual

16
OPERATING INFORMATION cont’d
{LEVEL} All four Level parameter menu selections are available for this module: Peak
Level, Baseline Level, External Modulation Level and CW Level.
Peak and Baseline Levels select the high and low power levels in Pulse Mode
operation. These levels may be set to zero or they may be adjusted between 30
µW and 1 mW in 3 MW steps (levels between zero and 50 µW may be selected
but output characteristics are not guaranteed). Peak Level and Baseline Level may
be set independently, but if Peak is set below Baseline the output will be a
constant CW at the Baseline Level.
External Modulation Level sets the quiescent optical power level. This may be
selected over the entire range of zero to 1 mW in 3 MW steps.
CW Level may also be adjusted to any power level between zero and 1 mW with 5
µW resolution.
{UNITS} This key is not used with the 106C/155/130 module (and has no effect).
FUNCTION KEYS These keys are not used with the 106C/155/130 module (and have no effect).
{A}, {B}, {C}
Remote Programming
The remote programming commands that are specific to this module correspond to the module
dependent front panel commands, as described in the previous section. Consult the 6040 manual and
the above section for details on controlling the instrument with remote programming. The Module Status
command, the only command that is specific to the 155/130 module, will be described here.
PS Module Status: This command returns the Module Status byte for the 155/130.
Module Status Byte:
Bit Description
7 Always zero
6 Always zero
5 Always zero
4 Always zero
3 Always zero
2 Always zero
1 Laser Active
0 Laser Guard
Bits 2-7: These bits are always zero and are reserved for future use.
Bit 1: This bit is set if the LASER ACTIVE LED is lit.
Bit 0: This bit is set if the LASER GUARD LED is lit.